All Tools

Professional
Web Tools

Powerful utilities. Zero servers. Everything runs in your browser.

50 tools · 100% client-side

Alle 50 PDF 7 Bild 6 Design 6 Text 8 Entwicklung 9 Sicherheit 3 Krypto 1 Netzwerk 1 Audio 2 Konverter 2 Mathematik 1 Finanzen 1 Zeit 1 Produktivität 2

PDF

7
PDF Compressor This free PDF compressor reduces PDF file size by re-encoding images with adaptive DPI scaling, working entirely in your browse… PDF PDF Merger & Splitter A free browser-based tool that merges multiple PDFs into one ordered file or splits a single PDF into smaller files by page ran… PDF Image to PDF A free browser-based tool that combines any number of JPG, PNG, WebP, GIF or BMP images into a single PDF, with page size, orie… PDF PDF Watermarker Stamps text or image watermark onto PDF pages, with full styling, locally with pdf-lib. PDF PDF to Word PDF.js extracts text + layout, JSZip builds valid OOXML .docx for Word/Docs/Pages. PDF EPUB to PDF JSZip unzips EPUB, reads OPF spine, pdf-lib builds PDF with cover, TOC, chapter headings. PDF TXT & CSV to PDF Auto-detects text vs CSV/TSV, renders prose with word-wrap or styled table with bold header. PDF

Bild

6
Image Converter This free image converter changes and compresses HEIC, JPG, PNG, WebP, GIF, BMP, AVIF and ICO files directly in your browser, i… Bild Color Palette Extractor This free color palette extractor reads any image you drop in, samples its pixels and surfaces the most representative colours… Bild Favicon Generator This free favicon generator turns any image, emoji or short text into a complete favicon set — multi-size PNGs, a real multi-resolution . Bild Video to GIF Converter This free video-to-GIF converter decodes any MP4, WebM, MOV or OGG video in your browser, lets you trim the slice you want, dia… Bild Transparent Signature Maker Browser-based tool that turns drawn or photographed signature into transparent PNG. Bild EXIF Remover Re-encodes images via canvas to drop EXIF/GPS/camera/timestamp/color-profile. Bild

Design

6
QR Code Designer This free QR code designer creates customizable, brand-free QR codes with your own colours, gradients and a centre logo, then e… Design Lorem Ipsum Generator This is a free, browser-based Lorem Ipsum generator that produces classic placeholder text in paragraphs, sentences, words or b… Design Fancy Border Radius This free fancy border-radius generator turns the eight-value CSS border-radius syntax into a tactile, eight-handle playground… Design CSS Box Shadow This free CSS box-shadow generator lets you stack any number of shadow layers visually, tune offset, blur, spread, colour and o… Design CSS Gradient This free CSS gradient generator lets you design linear, radial and conic gradients with unlimited colour stops, dial the angle… Design SVG Optimizer This free SVG optimizer strips the editor cruft, metadata, comments, default attribute values and excess whitespace that Illust… Design

Text

8
Word Counter This free word counter tallies words, characters, sentences and paragraphs in real time and estimates reading and speaking time… Text Text Diff Text Diff is a free online tool that compares two blocks of text side by side and highlights every addition, deletion and chang… Text Case Converter This is a free, browser-based case converter that instantly rewrites your text in UPPERCASE, lowercase, Title Case, Sentence ca… Text Text Cleaner This is a free, browser-based text cleaner that strips extra spaces, blank lines, tabs and invisible Unicode characters from an… Text Duplicate Line Remover This is a free, browser-based duplicate line remover that strips repeating lines from any text, with options for case-insensiti… Text Advanced Find & Replace This is a free, browser-based find and replace tool with full regular-expression support, case-insensitive matching, multiline… Text Email & Phone Extractor A free, browser-based extractor that scans pasted text or any dropped . TEXT Markdown Previewer A free, browser-based live previewer for GitHub Flavored Markdown — with syntax-highlighted code (highlight. TEXT

Entwicklung

9
JSON Editor This is a free, browser-based JSON editor that validates, formats, minifies, sorts and converts JSON to YAML or CSV instantly —… Entwicklung Base64 Encoder / Decoder This is a free, browser-based Base64 tool that encodes and decodes text and files instantly — supporting standard and URL-safe… Entwicklung URL Encoder / Decoder This is a free, browser-based URL encoder and decoder that percent-encodes and decodes text, query values and whole links insta… Entwicklung HTML Entity Encoder / Decoder This is a free, browser-based HTML entity encoder and decoder that converts text to and from HTML entities — escaping special c… Entwicklung Regex Tester This is a free online regex tester that lets you build, test and debug JavaScript regular expressions with real-time match high… Entwicklung Code Formatter This is a free, browser-based code formatter that beautifies and minifies HTML, CSS and JavaScript instantly using Prettier and… Entwicklung XML Formatter This is a free online XML formatter that pretty-prints, minifies and validates XML — and runs XPath queries against it — entire… Entwicklung Cron Parser This is a free online cron expression parser that explains any 5- or 6-field cron schedule in plain English (and 3 more languag… Entwicklung Git Generator This is a free online Git command generator that builds correct, copy-ready Git commands for the most common tasks — clone, bra… Entwicklung

Sicherheit

3
JWT Decoder This free JWT decoder splits a JSON Web Token into its header, payload and signature and decodes the claims in your browser, so… Sicherheit Password Generator This free tool builds cryptographically random passwords and EFF-style diceware passphrases entirely in your browser, showing l… Sicherheit Password Strength Tester This free, browser-only tool measures the real strength of a password by combining character-pool entropy with pattern detectio… Sicherheit

Krypto

1
Hash & UUID This free tool generates SHA-256, SHA-512 and MD5 hashes from text or files and produces bulk RFC 4122 UUIDv4 identifiers, comp… Krypto

Netzwerk

1
CIDR Calculator This is a free online CIDR / subnet calculator that breaks any IPv4 or IPv6 CIDR block into its network, broadcast and usable h… Netzwerk

Audio

2
Audio Cutter This free audio cutter decodes any MP3, WAV, OGG or M4A file in your browser with the Web Audio API, draws a real waveform, let… Audio Speech to Text This free tool turns spoken words into editable text live in your browser, using the W3C Web Speech API. Audio

Konverter

2
Unit & Data Converter This free tool converts between more than 200 units across 10 categories — length, mass, volume, temperature, speed, area, pres… Konvertieren Epoch Timestamp Converter This free tool converts between Unix timestamps (seconds, milliseconds, microseconds and nanoseconds) and human dates in UTC, l… Konvertieren

Mathematik

1
Advanced Percentage Calculator This free tool wraps six percentage workflows — what is X% of Y, X is what % of Y, percentage change, increase/decrease, tip &… Mathe

Finanzen

1
Card & IBAN Validator This free tool validates credit-card numbers with the Luhn algorithm and brand detection (Visa, Mastercard, Amex, Discover, Din… Finanzen

Zeit

1
Time Zone Planner This free tool tracks the current time in multiple cities side by side, highlights each city's work hours on a 24-hour timeline… Zeit

Produktivität

2
Scratchpad This free tool is a private offline notepad — a sidebar of notes, an editor with autosave to IndexedDB, search across titles an… Produktivität Bulk File Renamer Pattern-based bulk rename: {n}, {orig}, {date}, {ext} tokens, find/replace, case, ZIP delivery. Produktivität

No tools match your search.

Why browser-based tools?

Traditional web utilities send your files and data to remote servers for processing. Toolbox takes a fundamentally different approach: every computation happens inside your browser using modern APIs. Your PDFs, images, tokens and text never touch an external server.

The platform supports four languages — English, Turkish, German and Russian — with automatic browser language detection. Switching languages happens instantly without a page reload.

Frequently Asked Questions

No. All processing happens entirely in your browser. Your files are never transmitted to any server.
Most tools work offline after the initial page load. Tools that require CDN libraries need a connection on first use, after which they are cached by the browser.
English, Turkish (Türkçe), German (Deutsch) and Russian (Русский). The language is detected from your browser settings and can be changed instantly using the switcher in the navigation bar.